{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["cell type", "RNA", "protein", "cell line"], "input": "We have examined the effect of leukotriene B4 ( LTB4 ), a potent lipid proinflammatory mediator , on the expression of the proto-oncogenes c-jun and c-fos ."}
{"cell type": [], "RNA": [], "protein": ["proinflammatory mediator"], "cell line": []}